USB Adapter for DB9 Joysticks (Amiga, Commodore, Atari) | eBay
USB Joystick Adapters – breadbox64.com
C64 Mini review - USB & HDMI Commodore 64 | Rock Paper Shotgun
Competition Pro USB Joystick +Game-Collection 99 best of C64 Classix | SL-6603-TWT
USBJoy2.0E adapter - Extended Version. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
USB C64 Joystick adapter (for emulator) - Commodore Remix
Compatible List For Joysticks/Pads and Adapters | thec64community